Method of producing friction screw joints, in particular of steel bearing structures, and a friction screw joint, in particular of steel bearing structures

摘要

The purpose of the notification is to provide for the production of friction bolts, in particular steel support frames and friction bolts, in particular steel support frames, in particular head restraints or support with light bridge or gate levers. The method is that a distance working ring (3) is placed between the combined bolt assemblies with pre-tension (4) raw surfaces of the combined metal elements (1, 2),which applies the screws of the pre-tensioned bolt assembly (4) to each of the screws;then the working ring (3) rotates with the working ring (3) and its front working surface (5) by grinding or sawing the raw surface of the combined metal elements (1, 2) by means of a key fixed in the distance selections,The constant pressure of the combined metal elements (1, 2) is controlled by turning the screws at appropriate moments, while the metal grooves resulting from the treatment are discharged through the channels of the grooves made in the distance grooming ring (3). The thin connection has between the connected bolt assemblies with pre-tension (4) metal elements (1, 2) at least one working distance ring (3),which is mounted on the screw screw holder of the pre-tensioned screw assembly (4).